TNFAIP6 and intervertebral disk degenerative disorder: Immunoinfiltration analysis revealed that γδ T cells were significantly enriched in IDD samples (Figure S6, Panel B in the Online Supplementary Document) and positively correlated with the key targets CYP1B1 and TNFAIP6 (Figure S6, Panels C and D in the Online Supplementary Document).